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臭氧O3氣體測毒管182U OZONE 0.025-3.0ppm,臭氧還可以氧化、分解水中的污染物,在水處理中對除嗅味、脫色、殺菌、去除酚、氰、鐵、錳和降低COD、BOD等都具有顯著的效果。低濃度的臭氧可消毒,但超標(biāo)的臭氧則是個無形殺手! ▲ 它強烈刺激人的呼吸道,造成咽喉腫痛、胸悶咳嗽、引發(fā)支氣管炎 和肺氣腫; ▲ 臭氧會造成人的神經(jīng)中毒,頭暈頭痛、視力下降、記憶力衰退; ▲ 臭氧會對人體皮膚中的維生素E起到破壞作用,致使人的皮膚起皺、 出現(xiàn)黑斑; ▲ 臭氧還會
更新時間:2024-11-20
在線留言臭氧O3氣體測毒管182U OZONE 0.025-3.0ppm
臭氧屬于有害氣體,濃度為 6.25×10mol/L(0.3mg/m3 ) 時,對眼、鼻、喉有刺激的感覺;濃度 (6.25-62.5)×10 -5 mol/L(3 ~ 30mg/m3 ) 時,出現(xiàn)頭疼及呼吸器官局部麻痹等癥 ; 臭氧濃度為 3.125×10 -4 ~ 1.25×10 -3 mol/L(15 ~ 60mg/m 3 ) 時 , 則對人體有危害。其毒性還和接觸時間有關(guān),例如長期接觸 1.748×10 -7 mol/L(4ppm) 以下的臭氧會引起*性心臟障礙,但接觸 20ppm 以下的臭氧不超過 2h ,對人體無*性危害。因此,臭氧濃度的允許值定為 4.46×10 -9 mol/L(0.1ppm)8h. 由于臭氧的臭味很濃,濃度為 4.46×10 -9 mol/L(0.1ppm) 時,人們就感覺到,因此,世界上使用臭氧已有一百多年的歷史,至今也沒有發(fā)現(xiàn)一例因臭氧中毒而導(dǎo)致死亡的報道。
Tube 82U
1. PERFORMANCE
1) Measuring range :0.15-3.0 ppm 0.05-1.0 ppm 0.025-0.5 ppm
Number of pump strokes 1(100ml) 3(300ml) 6(600ml)
2) Sampling time :3 minutes/3 pump strokes
3) Detectable limit :0.01 ppm(600ml)
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 3 pump strokes
7) Colour change :Blue→White
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Indigo is oxidized and Isatin is produced.
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
0.1
0.05
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
ppm
300ml
GAS To pump
182U OZONE
Substance Interference ppm Coexistence
The top of discoloured layer
Nitrogen dioxide Similar stain is produced. 0.5 becomes unclear and higher
FIG.1 readings are given.
Chlorine 〃10
Oxidant Similar stain is produced and this
has same sensitivity with Ozone.
(NOTE)
In case of 1 or 6 pump strokes, following formula is available for actual concentration.
Actual concentration=Reading value ×
0
0.4
0.6
0.2
Nitrogen dioxide〔ppm〕?
FIG.1 Influence of Nitrogen dioxide
Ozone indicating value 〔ppm〕
0.5 1.0
3
Number of strokes
C
NH
HN
C
O
=?
O
C
=?
=C
C
NH
C
O
=?
+2O3 ? 2 =O+2O2
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